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CRA CDs, Inc., wants the mean lengths of the "cuts" on a CD to be 135 seconds (2 minutes and 15 seconds). This will allow the disk jockeys to have plenty of time for commercials within each 10-minute segment. Assume the distribution of the length of the cuts follows the normal distribution with a population standard deviation of 8 seconds. Suppose we select a sample of 16 cuts from various CDs sold by CRA CDs, Inc.
(a) What can we say about the shape of the distribution of the sample mean (binomial, normal, or uniform)?
(b) What is the standard error of the mean (in seconds)?
(c) What percent of the sample means will be greater than 140 seconds?
(e) What percent of the sample means will be greater than 128 but less than 140 seconds?
(Y) Dollars per unit 3.00, 4.50, 5.00, 6.00, 8.00 (X) Units per Period 5,000 - 8,000, - WHAT IS THE MONOPOLIST'S PROFIT-MAXIMIZING OUTPUT - At the profit-maximizing output rate, what are the monopolist's average total cost and axerage revenue
Multicollinearity refers to existence of correlation among the independent variables in a multiple regression model. Explain how multicollinearity can impact your regression analysis.
Consider a committee that consists of three people, A, B, and C, that is to examine three proposals, x, y, and z. The committee can adopt at most one of the three proposals; it also has the option of adopting none.
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Where PX is price of donut; PC is price of coffee; M1 is Ross's income; M2 is Jennifer's income. Suppose Price of coffee is $10, Ross's total income is $1000 and Jennifer's total income is $2000. A) Find market demand function for donuts. If marke..
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In January of 2007 Mary bought 100 stocks of Apple Inc for $55 each. this stock paid an average dividend of $4.50 per stock until the end of each year until mary sold all the stocks in December 2012 for $75.50 each. What is the effective interes..
Baby boomers can save up to $22,000 per year in a 401k account. If Eileen's starting balance at age 50 is $200,000 and she saves the full amount available to her, how much money will she have saved when she is 65 years old (after 15 years of savin..
A new truck can be purchase for $84,000. Its expected useful life is six years, at wich time market value will be zero. Annual receipts less expenses will approximatetely $18,000 per year over the six-year study period. Use the PW method and MARR ..
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A loan of P0 which accrues an interest i per period is to be paid of with a uniform gradient annuity with initial payment A and gradient G over n periods. Thus, the change in the amount of principal is governed by Pn =Pn-1(1+i)-A0 -(n-1) G (1)
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